         "after yesterday"
         {:revision_date (t/minus- (t/now) (t/days 1))}
         [granule1-prov1 granule2-prov1 granule3-prov1-2 granule4-prov2]))
+
+    (testing "content-type in search header"
+      (are3 [params]
+        (is (= "application/json; charset=utf-8" 
+               (get-in (search/find-deleted-granules params) [:headers :Content-Type])))
+
+        "deleted granule search header contains application/json content-type."
+        {:revision_date (t/minus- (t/now) (t/days 1))}))
 
     (testing "Search for all after date for provider"
       (are3 [params granules]

      (are3 [params granules]
        (is (= (set (map :concept-id granules))
               (set (find-deleted-granules params))))

        "after tomorrow"
        {:revision_date (t/plus- (t/now) (t/days 1))}
        []

      (is (= (:status response) 400))
      (is (= ["Result format [xml] is not supported by deleted granules search. The only format that is supported is json"]
             (:errors response))))))

